Metacat

//\/////

//\  overLIB Center Popup Plugin

//\  This file requires overLIB 4.10 or later.

//\

//\  overLIB 4.10 - You may not remove or change this notice.

//\  Copyright Erik Bosrup 1998-2003. All rights reserved.

//\  Contributors are listed on the homepage.

//\  See http://www.bosrup.com/web/overlib/ for details.

//   $Revision$                $Date$

//

//\/////

//\mini

////////

// PRE-INIT

// Ignore these lines, configuration is below.

////////

if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Center Popup Plugin.');

else {

registerCommands('centerpopup,centeroffset');

////////

// DEFAULT CONFIGURATION

// You don't have to change anything here if you don't want to. All of this can be

// changed on your html page or through an overLIB call.

////////

// Default value for centerpopup is to not center the popup

if (typeof ol_centerpopup == 'undefined') var ol_centerpopup = 0;

if (typeof ol_centeroffset == 'undefined') var ol_centeroffset = '0';

////////

// END OF CONFIGURATION

// Don't change anything below this line, all configuration is above.

////////

////////

// INIT

////////

// Runtime variables init. Don't change for config!

var o3_centerpopup = 0;

var o3_centeroffset = '0';

////////

// PLUGIN FUNCTIONS

////////

function setCenterPopupVariables() {

	o3_centerpopup = ol_centerpopup;

	o3_centeroffset = ol_centeroffset;

}

// Parses Shadow and Scroll commands

function parseCenterPopupExtras(pf,i,ar) {

	var k = i,v;

	if (k < ar.length) {

		if (ar[k] == CENTERPOPUP) { eval(pf + 'centerpopup = (' + pf + 'centerpopup == 0) ? 1 : 0'); return k; }

		if (ar[k] == CENTEROFFSET) { k = opt_MULTIPLEARGS(++k,ar,(pf + 'centeroffset')); return k; }

	}

	return -1;

}

// Function which positions popup in Center of screen

function centerPopupHorizontal(browserWidth, horizontalScrollAmount, widthFix) {

	if (!o3_centerpopup) return void(0);

	var vdisp = o3_centeroffset.split(',');

	var placeX, iwidth = browserWidth, winoffset = horizontalScrollAmount;

  var pWd = parseInt(o3_width);

	placeX = winoffset + Math.round((iwidth - widthFix - pWd)/2) + parseInt(vdisp[0]);

	if(typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_relx = placeX;

	return placeX;

}

function centerPopupVertical(browserHeight,verticalScrollAmount) {

	if (!o3_centerpopup) return void(0);

	var placeY, iheight = browserHeight, scrolloffset = verticalScrollAmount;

	var vdisp = o3_centeroffset.split(',');

	var pHeight = (o3_aboveheight ? parseInt(o3_aboveheight) : (olNs4 ? over.clip.height : over.offsetHeight));

	placeY = scrolloffset + Math.round((iheight - pHeight)/2) + (vdisp.length > 1 ? parseInt(vdisp[1]) : 0);

	if(typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_rely = placeY;

	return placeY;

}

////////

// PLUGIN REGISTRATIONS

////////

registerRunTimeFunction(setCenterPopupVariables);

registerCmdLineFunction(parseCenterPopupExtras);

registerHook('horizontalPlacement',centerPopupHorizontal,FCHAIN);

registerHook('verticalPlacement', centerPopupVertical, FCHAIN);

if(olInfo.meets(4.10)) registerNoParameterCommands('centerpopup');

}